14. Hormones coordinate secretion of digestive juices Name Source Stimulant Target Organ Function Stomach Gastrin Pyloric mucosa Partially-digested food Gastric glands Secretion of gastric juice Intestinal Gastrin Intestinal mucosa Stomach Secretin Acidity of chyme Pancreas and liver Secretion of PJ rich in HCO 3 - and bile production Cholecystokinin (CCK) Fats or combination of acids and fats Pancreas and gallbladder (Sphincter of Oddi in CBD) Secretion of PJ, bile from gallbladder, opening of SO Enterocrinin Acidity of chyme Duodenum Secretion of intestinal juice Enterogastrone or Gastric Inhibitory Peptide (GIP) Fats Stomach Inhibits secretion of gastric juice and decreases gastric motility